Duggal, K. L.; Jin, D. H. A classification of Einstein lightlike hypersurfaces of a Lorentzian space form. (English) Zbl 1207.53064 J. Geom. Phys. 60, No. 12, 1881-1889 (2010). Reviewer: Marco Modugno (Firenze) MSC: 53C40 53C25 53C50 PDF BibTeX XML Cite \textit{K. L. Duggal} and \textit{D. H. Jin}, J. Geom. Phys. 60, No. 12, 1881--1889 (2010; Zbl 1207.53064) Full Text: DOI
Duggal, Krishan L.; Jin, Dae Ho Null curves and hypersurfaces of semi-Riemannian manifolds. (English) Zbl 1144.53002 Hackensack, NJ: World Scientific (ISBN 978-981-270-647-8/hbk). viii, 293 p. (2007). Reviewer: Alexander A. Borisenko (Khar’kov) MSC: 53-02 53C50 53C40 53C42 PDF BibTeX XML Cite \textit{K. L. Duggal} and \textit{D. H. Jin}, Null curves and hypersurfaces of semi-Riemannian manifolds. Hackensack, NJ: World Scientific (2007; Zbl 1144.53002)
Duggal, K. L.; Jin, D. H. Totally umbilical lightlike submanifolds. (English) Zbl 1049.53011 Kodai Math. J. 26, No. 1, 49-68 (2003). Reviewer: Marian Hotloś (Wrocław) MSC: 53B25 53C40 53C50 PDF BibTeX XML Cite \textit{K. L. Duggal} and \textit{D. H. Jin}, Kodai Math. J. 26, No. 1, 49--68 (2003; Zbl 1049.53011) Full Text: DOI
Duggal, K. L.; Jin, D. H. Half lightlike submanifolds of codimension 2. (English) Zbl 0995.53051 Math. J. Toyama Univ. 22, 121-161 (1999). Reviewer: Ion Mihai (Bucureşti) MSC: 53C50 53B30 53B25 PDF BibTeX XML Cite \textit{K. L. Duggal} and \textit{D. H. Jin}, Math. J. Toyama Univ. 22, 121--161 (1999; Zbl 0995.53051)
Duggal, K. L.; Jin, D. H. Geometry of null curves. (English) Zbl 0956.53015 Math. J. Toyama Univ. 22, 95-120 (1999). Reviewer: E.García-Río (Santiago de Compostela) MSC: 53B25 53C40 53C50 PDF BibTeX XML Cite \textit{K. L. Duggal} and \textit{D. H. Jin}, Math. J. Toyama Univ. 22, 95--120 (1999; Zbl 0956.53015)